HTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-8450
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 05:16:23 UTC
Updated2026-07-15 01:17:04 UTC
DescriptionHTTP::Daemon versions before 6.17 for Perl allow OS command injection via send_file(). send_file() opens its string argument with Perl's 2-arg open(). The 2-arg form interprets magic prefixes: '| cmd' and 'cmd |' open a pipe to a subprocess, '> path' and '>> path' open the path for write or append. Untrusted input passed to send_file() can run OS commands at the daemon process UID. The read-pipe form ('cmd |') also leaks subprocess stdout into the HTTP response body. The write-mode forms can create or truncate files at attacker chosen paths.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.014520000 probability, percentile 0.704350000 (date 2026-07-16)

Problem Types: CWE-73 | CWE-78 | CWE-78 CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | CWE-73 CWE-73 External Control of File Name or Path | CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1ADPCVSS8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.10b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OALDERS HTTPDaemon affected 6.17 custom Not specified
ADP Red Hat Red Hat Enterprise Linux 10 unaffected 0:6.16-7.el10_2.1 * rpm Not specified
ADP Red Hat Red Hat Enterprise Linux 8 unaffected 0:6.01-24.el8_10 * rpm Not specified
ADP Red Hat Red Hat Enterprise Linux 9 unaffected 0:6.12-6.el9_8.1 * rpm Not specified
ADP Red Hat Red Hat Enterprise Linux 7 Not specified Not specified

References

ReferenceSourceLinkTags
access.redhat.com/errata/RHSA-2026:36189 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
access.redhat.com/security/cve/CVE-2026-8450 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
www.openwall.com/lists/oss-security/2026/05/27/5 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8450.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c security.access.redhat.com
github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390ac... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
lists.debian.org/debian-lts-announce/2026/06/msg00028.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
bugzilla.redhat.com/show_bug.cgi 0b0ca135-0b70-47e7-9f44-1890c2a1c46c bugzilla.redhat.com
metacpan.org/release/OALDERS/HTTP-Daemon-6.17/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
github.com/libwww-perl/HTTP-Daemon/pull/89 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
access.redhat.com/errata/RHSA-2026:36187 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
access.redhat.com/errata/RHSA-2026:36188 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2026-05-12T00:00:00.000ZIssue identified.
CNA2026-05-19T00:00:00.000ZHTTP-Daemon 6.17 released.
ADP2026-05-27T05:00:58.395ZReported to Red Hat.
ADP2026-05-27T04:22:26.539ZMade public.

Solutions

CNA: Upgrade to HTTP-Daemon 6.17 or later.

ADP: RHSA-2026:36189: Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)

ADP: RHSA-2026:36188: Red Hat Enterprise Linux CRB (v. 8)

ADP: RHSA-2026:36187: Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)

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